# 025 — Seed a default dashboard with 2 default panels

## Summary

`ProfileStore::ensure_default` creates the `Default` profile with no dashboards.
The wishlist wants every fresh Default profile to come with a starter dashboard:
a line chart of "error" vs. non-"error" log volume, and a pie chart of the same
ratio.

## Scope

- On `ensure_default` creating a brand-new `Default` profile (not on every
  startup — only when the profile itself is newly created), seed one
  `Dashboard` with two panels:
  - Line chart: log message count over time, split into "contains `error`" vs.
    "does not contain `error`" series.
  - Pie chart: same split, as a ratio/total-count breakdown.
- Express both panels as PromQL-style queries against a counter
  ([022](022-metrics-counters-rethink.md)) — this likely requires an implicit
  built-in "log matched regex X" counter concept (e.g. auto-declaring a metric
  for `regex("error")` vs. its complement), or a raw-text regex count primitive
  in the PromQL surface if one doesn't already exist. Decide and document which.
- Seeded dashboard/panels must persist through the normal profile save path (same
  as any user-created dashboard) so it's editable/deletable like any other.

## Acceptance criteria

- A fresh install (no existing settings/profile store) starts up with a `Default`
  profile that already has one dashboard containing the line and pie panels
  described above, without any user action.
- Restarting with an already-existing `Default` profile does not re-seed or
  duplicate the dashboard.
- The seeded panels render real data against a log stream containing a mix of
  "error" and non-"error" lines.

## Depends on

- [022 — Metrics rethink](022-metrics-counters-rethink.md) (defines what a
  "count of matching logs" counter/query looks like).